The Coming Smart Grid Boom -- and Bust
4.8.10
Jack Ellis
Smart Grid is the power industry's version of the legendary dot.com
boom. It could bring some long overdue innovation and excitement to the
industry, or it could leave enormous disappointment in its wake. There
are certainly some interesting parallels -- legions of starry-eyed
entrepreneurs with big ideas chasing venture capital; a whole cottage
industry of newsletters, seminars and conferences; and lots and lots of
hype. In 2000, every company was a dot.com company. Today it seems
announcements for every new device and every new service in the power
industry claim they're either Smart Grid ready, or an essential building
block of the Smart Grid.
It's no secret that our nation's power grid (and the power grids of most
countries) is a bit antiquated. System operators rely on estimates of
power flows, phase angles and voltages at critical points on the grid
rather than real data. Transmission line ratings are overly
conservative, in part because accurate state measurements and granular
temperature and wind speed data are not available in grid control rooms,
so operating margins are padded accordingly. Lack of remote diagnostics
and communications at substations means the nature and location of
equipment outages at both the transmission and distribution levels are
difficult to isolate and identify without sending someone to
investigate, which in turn leads to unnecessarily long service
interruptions. These are some of the critical issues that a Smart Grid
strategy should be addressing.
The problem is, installing phasor measurement units (PMUs), putting wind
and temperature sensors on transmission towers, and spending money for
remote substation monitoring are not the kinds of things that resonate
with politicians, regulators or the public. These are parts of the power
grid infrastructure that few people see and even fewer people care
about, at least until something goes wrong. But they're damned
important. Just ask the men and women who monitor and operate the grid
every day. Better yet, just ask FirstEnergy.
Likely in an attempt to build broad public support, Smart Grid has
evolved into a strategy that focuses on the customer side of the meter.
"Smart Meters", which are little more than interval meters that can
communicate wirelessly or via some wired medium (telco or utility power
lines) and may have two-way communications, are one part of the
strategy. Another is in-home displays that allow consumers to monitor
energy usage. And then there's the enormous interest in electric
vehicles, which presents a sizable new sales opportunity for utilities
and power producers, offers a potential source of flexibility to
accommodate the variability and difficult-to-predict output of renewable
energy projects, and urgently requires innovative solutions to the
problem of charging batteries so millions of vehicles plugged in at the
same time don't overload the grid. Sometimes explicitly and often times
not, there seems to be an underlying assumption among smart grid
proponents that customers will allow their local utility or the regional
grid operator to control end use devices over this Smart Grid
infrastructure.
In this author's view, any Smart Grid strategy must focus on and be
limited to those elements of the grid that lie upstream of the customer
side of the meter. PMUs and better weather data are particularly
worthwhile targets for investment because they could increase the
capacity of the transmission system at relatively modest cost and
without the headaches of permitting and building new lines. Moreover,
all of this upstream infrastructure is owned by the utility and it is
the utility's responsibility to maintain and operate it. Modernizing it
will require a large investment of time, money and effort that should
not be diluted or slowed down by well intentioned but misguided attempts
to reach into customer premises.
The customer side of the meter is and should be the customer's
responsibility, with perhaps a select few exceptions. It makes sense to
require programmable thermostats in new home construction, because they
save money and they're cheap. It makes sense to impose appliance level
energy efficiency standards if regulators insist on keeping electricity
prices artificially low while trying to encourage energy efficiency and
demand management. However, home displays and devices that could
potentially be used to extend the reach of a utility into homes and
businesses are largely a waste of money. If consumers perceive there's
value in installing these devices, they should be able to buy them at a
local hardware store or electronics retailer, bring them home and plug
them in. Standards development efforts currently underway to facilitate
interoperability should ensure that this happens. If customers don't
perceive any value in displays and intelligent appliances, then allowing
utilities to install expensive, sophisticated hardware in homes and
businesses, and then recover the cost in rates is foolish and wasteful.
Moreover, even if most customers were willing to allow their local
utility to control appliances and electric vehicle charging, it's simply
not practical at the scale and level of granularity that is going to be
required as renewable energy makes up a larger and larger fraction of
our power supply. Current Demand Response programs are not up to the
task of providing the kind of flexibility grid operators will need in a
few short years and even if they were, there simply isn't enough
computing power on the face of the earth to control thousands, let alone
millions, of electrical devices in an efficient way that also avoids
inconveniencing customers2.
It is for these reasons that the more mundane elements of Smart Grid
will move forward and likely be highly successful, albeit with little
public notice. The sexier elements will likely follow in the footsteps
of so many dot.com companies, though perhaps with a twist. This time,
companies large, small and mostly tied to the traditional utility
industry supply chain will pour substantial amounts of money into R&D,
pilots and small-scale demonstrations, only to find out they've
misjudged consumers and don't really understand where and how to tap
that flexibility. The true fortunes will be reaped in a second
incarnation of Smart Grid by clever consumer products companies that can
develop simple, easy-to-use devices and a compelling value proposition
that gives rise to Grid Smart consumers.
References:
1. Electricity rates are typically linked to
historical costs, which is why customers typically have a hard time
justifying energy efficiency improvements. This is one of the reasons
residential-scale thermal storage that costs $1,000/kW can't compete
with a new peaking plant that costs $1,000/kW.
2. The "prices to devices" concept is a much cheaper,
simpler and more practical way to harness demand-side flexibility, but
the power industry has not yet embraced the different way of thinking
about electricity pricing and power system coordination and control
that's required for this concept to work.
Copyright © 2002-2010, CyberTech, Inc. - All rights reserved.
|